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Mathematics, 27.07.2019 21:00 javibote
Whay are the roots of the polynomial equation x^3-6x=3x^2-8 using a graphing calculator and a system of equations
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Prove (a) cosh2(x) β sinh2(x) = 1 and (b) 1 β tanh 2(x) = sech 2(x). solution (a) cosh2(x) β sinh2(x) = ex + eβx 2 2 β 2 = e2x + 2 + eβ2x 4 β = 4 = . (b) we start with the identity proved in part (a): cosh2(x) β sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 β sinh2(x) cosh2(x) = 1 or 1 β tanh 2(x) = .
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Whay are the roots of the polynomial equation x^3-6x=3x^2-8 using a graphing calculator and a system...
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